Whitecap Mountains Sanitary District
9106 W County E, Upson, WI 54565 · Iron County · Publicly Owned Treatment Works
- Average flow
- 0.06 MGD
- Design flow
- 0.05 MGD
- NPDES permit
- WI0031747
- Expired
- Permit expires
- March 2023
- Population served
- 192
- CWNS 2022
Whitecap Mountains Sanitary District is a publicly owned wastewater treatment plant in Upson, Iron County, Wisconsin treating an average of 0.06 million gallons per day against a permitted design capacity of 0.05 MGD, serving about 192 residents. It discharges under NPDES permit WI0031747 (expired), which expires in March 2023, with 0 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Whitecap Mountains Sanitary District.
Available with a free Klarifi account
See the full treatment train at Whitecap Mountains Sanitary District: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Whitecap Mountains Sanitary District.
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Nearby wastewater treatment plants in Wisconsin
Montreal · 8 mi away
0.19 MGD
Mellen · 13 mi away
0.14 MGD
Odanah · 20 mi away
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Glidden · 21 mi away
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Ashland · 26 mi away
0.95 MGD
Washburn · 31 mi away
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La Pointe · 32 mi away
0.03 MGD
Park Falls · 33 mi away
0.3 MGD
Whitecap Mountains Sanitary District: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed October 26, 2026; facility record last updated August 9, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Oxidation ditch · Anaerobic digester · all terms